| Name | Randolph County |
| State | Illinois |
| FIPS Code | 17157 |
| County Seat | Chester |
| Timezone | Central Daylight Time (CDT) |
| Population (2024) | 29,993 |
| Population Growth Rate(2020-2024) | -0.55% |
| Majority Ethnicity | White 87.51% |
| Public School Majority Ethnicity | White 82% |
| Partisan Voting Index | Strongly Republican:+26 |
| Unemployment Rate (May 2026) | 4.4% |
| Sales Tax Rate (2025) | 7.25% |
| Area Code(s) | 618 / 235 / 573 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 87.51% |
| African American | 8.03% |
| Hispanic | 3.65% |
| Asian | 0.64% |
| Native American | 0.12% |
| Hawaiin/Pacific Islander | 0.05% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 81.62% |
| African American | 6.24% |
| Hispanic | 6.13% |
| Asian | 0.23% |
| Native American | 0.04% |
| Hawaiin/Pacific Islander | 0.04% |